Finding the Fourth Proportional to 123.84, 184.71 and 108.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123.84 : 184.71 = 108.72 : x
2. Step 2: Convert to fraction form
   123.84/184.71 = 108.72/x
3. Step 3: Cross multiply
   123.84x = 184.71 × 108.72
4. Step 4: Simplify right side
   123.84x = 20,081.67
5. Step 5: Solve for x
   x = 20,081.67/123.84
6. Step 6: Final answer
   x = 162.16